EP4036402B1 - Rotorblatt für eine windturbine - Google Patents

Rotorblatt für eine windturbine Download PDF

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Publication number
EP4036402B1
EP4036402B1 EP21382087.1A EP21382087A EP4036402B1 EP 4036402 B1 EP4036402 B1 EP 4036402B1 EP 21382087 A EP21382087 A EP 21382087A EP 4036402 B1 EP4036402 B1 EP 4036402B1
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EP
European Patent Office
Prior art keywords
connection terminal
conductive layer
lightning
blade
power supply
Prior art date
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Application number
EP21382087.1A
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English (en)
French (fr)
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EP4036402A1 (de
Inventor
Victor March Nomen
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Siemens Gamesa Renewable Energy Innovation and Technology SL
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Siemens Gamesa Renewable Energy Innovation and Technology SL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FIEP21382087.1T priority Critical patent/FI4036402T3/fi
Application filed by Siemens Gamesa Renewable Energy Innovation and Technology SL filed Critical Siemens Gamesa Renewable Energy Innovation and Technology SL
Priority to ES21382087T priority patent/ES2967537T3/es
Priority to EP21382087.1A priority patent/EP4036402B1/de
Priority to PT213820871T priority patent/PT4036402T/pt
Priority to DK21382087.1T priority patent/DK4036402T3/da
Priority to US17/586,400 priority patent/US11773828B2/en
Priority to CN202210107430.8A priority patent/CN114837879A/zh
Priority to CA3147027A priority patent/CA3147027A1/en
Publication of EP4036402A1 publication Critical patent/EP4036402A1/de
Application granted granted Critical
Publication of EP4036402B1 publication Critical patent/EP4036402B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30—Lightning protection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/40—Ice detection; De-icing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/307—Blade tip, e.g. winglets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
    • F05B2280/6003—Composites; e.g. fibre-reinforced
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to a blade for a wind turbine, in particular, to blades comprising an ice formation prevention system and a lightning protection system.
  • Blades for a wind turbine with an ice formation prevention system and a lightning protection system are known in the art. Taking into account that wind turbines and in particular, the blades of these turbines have high probabilities of being struck by a lightning, it is necessary to equip the blade with a lightning protection system for minimizing the effect of the lightning in the blade, in particular in the electrical elements contained in the blade and/or in the wind turbine.
  • blades including conductive layers integrated into the shell structure of the blade, in particular in the leading edge of the blade are known for preventing the formation of ice which adversely affects the efficiency of the wind turbine.
  • the presence of an ice formation prevention systems in a blade could also affect the efficiency of the lightning protection system.
  • the conductive layer can attract lightning and thus damage the blade, particularly on the blade tip region comprising approximately last five meters of the blade, and mostly on end of the conductive layer which is closer to the blade tip. Damage of the conductive layer may result in a limited performance or complete failure of the ice formation prevention system. Solutions to reduce damage in the conductive layer due to lightning striking are known in the art, as for example WO2018/095649A1 and EP2857678 .
  • WO2018/095649A1 describes a blade for a wind turbine comprising a trailing edge and a leading edge longitudinally extending from the blade tip to the blade root, a lightning protection system with a lightning receptor arranged on the blade tip for receiving lightning and a lightning down conductor for conducting a lightning current received by the lightning receptor to the blade root, and an ice formation prevention system with a conductive layer arranged along the leading edge having a first end oriented to the blade tip and a second end oriented to the blade root, and a first connection terminal placed on the first end of the conductive layer and a second connection terminal placed on the second end of the conductive layer for electrically connecting the conductive layer with a power supply unit and therefore heating the conductive layer for preventing ice formation.
  • the first connection terminal of the conductive layer is electrically connected with the lightning down conductor such that their potential are equalized, minimizing damage of lightning striking.
  • the blade has several lightning receptors arranged on the blade tip region for attracting lightning and protecting the conductive layer of the ice formation prevention system.
  • EP2857678 discloses a wind turbine blade comprising a lightning protection system and a system for preventing the formation of ice, wherein conductive sheets are embedded into the external laminate of the wind turbine blade at the leading edge, and electrodes are provided at the areas of connection between the conductive sheets and a lightning down cable.
  • the object of the invention is to provide a blade for a wind turbine as defined in the claims.
  • An aspect of the invention relates to a blade for a wind turbine comprising a trailing edge and a leading edge longitudinally extending from the blade tip to the blade root, a lightning protection system with at least one lightning receptor arranged on the blade tip for receiving lightning and at least one lightning down conductor for conducting a lightning current received by the lightning receptor to the blade root, and an ice formation prevention system with a conductive layer arranged along the leading edge having a first end oriented to the blade tip and a second end oriented to the blade root, and a first connection terminal placed on the first end of the conductive layer and a second connection terminal placed on the second end of the conductive layer for electrically connecting the conductive layer with a power supply unit, the first connection terminal of the conductive layer is electrically connected with the lightning down conductor, wherein the first connection terminal partially contacts the conductive layer and have a rear section connected to the conductive layer and a front section that longitudinally extends towards the blade tip.
  • the first connection terminal of the conductive layer is oversized towards the blade tip to attract lightning and thus preventing them to directly strike onto the conductive layer avoiding damage of the conductive layer.
  • the oversized first connection terminal is arranged on the blade tip region and allows to reduce the number of lightning receptors required to be arranged on the blade tip region for attract lightning and protect the conductive layer of the ice formation prevention system.
  • the oversized first connection terminal is cheaper and requires a less complicate manufacturing process than placing lightning receptors on the blade tip region.
  • FIG. 1 shows a blade 1 for a wind turbine comprising a lightning protection system 10 and an ice formation prevention system 20 according to the prior art.
  • the blade 1 has a trailing edge 2 and a leading edge 3 longitudinally extending from the blade tip 4 to the blade root 5.
  • a dashed line represents the profile of the blade 1.
  • the lightning protection system 10 comprises a lightning receptor 11 arranged on the blade tip 4 for receiving lightning and a lightning down conductor 12 for conducting a lightning current received by the lightning receptor 11 to the blade root 5.
  • the lightning current is conducted from the the blade root 5 to a ground terminal through the hub (not represented) .
  • the ice formation prevention system 20 comprises a conductive layer 21 which is arranged along the leading edge 3 and which have a first end 22 oriented to the blade tip 4 and a second end 23 oriented to the blade root 5.
  • the ice formation prevention system 20 further comprises a first connection terminal 24 placed on the first end 22 of the conductive layer 21 and a second connection terminal 25 placed on the second end 23 of the conductive layer 21 for electrically connecting the conductive layer 21 with a power supply unit (not shown in Figure 1 ) and for heating the conductive layer 21.
  • the conductive layer 21 is a heating mat comprising a conductive material (for example carbon fibers) for deicing the ice formed onto the blade 1. Said conductive layer 21 attracts lightning that may damage the blade 1, so the first connection terminal 24 of the conductive layer 21 is electrically connected with the lightning down conductor 12, ensuring the equipotentiality of the ice formation prevention system 20 and the lightning protection system 10.
  • the blade 1 also comprises other lightning receptors 13 arranged on the trailing edge 2 of the blade 1 to prevent lightning to strike the conductive layer 21.
  • FIG 2 shows a blade 1 for a wind turbine according to the invention.
  • the blade 1 is identical to the blade 1 described above in Figure 1 but has a first connection terminal 24 which is oversized towards the blade tip 4 to attract lightning and thus preventing them to directly strike onto the first end 22 of the conductive layer 21.
  • the first connection terminal 24 partially contacts the conductive layer 21 and have a rear section 241 connected to the conductive layer 21 and a front section 242 that longitudinally extends towards the blade tip 4.
  • the front section 242 creates a conductive mass close to the blade tip 4 where lightning may directly strike, thus preventing them to strike onto the first end 22 of the conductive layer 21.
  • the first connection terminal 24 is electrically connected with the lightning down conductor 12, thus the first connection terminal 24 works as a lightning receptor.
  • the first connection terminal 24 is electrically connected with the lightning down conductor 12 through a conductor 28.
  • FIG 4 shows another embodiment of the blade shown in Figures 2 and 3 .
  • the blade 1 further comprises another lightning receptor 14 arranged parallel to the first connection terminal 24 on the trailing edge 2 of the blade 1.
  • the first connection terminal 24 works as a lightning receptor on the leading edge 3 preventing lightning striking onto the conductive layer 21, but lightning may strike on the trailing edge 2, on the part opposed where the first end 22 of conductive layer 21 is placed, thus the another lightning receptor 14 is placed on said zone of the trailing edge 2.
  • Figures 5 to 7 show other embodiments of first connection terminal 24, the conductive layer 21 and the electrical connection with lightning down conductor 12. Said embodiments show that other lightning receptor 14 arranged on the trailing edge 2 of the blade; however said lightning receptor 14 is not necessary for preventing lightning strike onto the conductive layer 21 of the leading edge 3 as describe in Figure 3 .
  • the first connection terminal 24 is electrically connected with the lightning down conductor 12 and the second connection terminal 25 is electrically connected with a power supply wire 27, the lightning down conductor 12 and the power supply wire 27 are connected to the power supply unit.
  • the lightning down conductor 12 works as a power supply wire for heating the conductive layer 21.
  • the first connection terminal 24 is electrically connected with a first power supply wire 26 and the second connection terminal 25 is electrically connected with a second power supply wire 27, the power supply wires 26 and 27 are connected to the power supply unit, and the first power supply wire 26 is connected to the lightning down conductor 12 by a surge protection device 15.
  • the lightning down conductor 12 does not work as a power supply wire for heating the conductive layer 21, and the conductive layer 21 has independent power supply wires for heating the layer 21.
  • the surge protection device 15 protects the ice formation prevention system 20 when a surge due to a lightning strike occurs, reducing the current passing through the power wires 26 and 27.
  • the surge protection device 15 works as a switch that closes during the short time of the surge, i.e. it works as an open switch preventing the passage of current when a certain voltage is not exceeded and it works as a closed switch when a certain voltage is exceeded.
  • the overvoltage currents can flow to the ground via lightning down conductor 12 or via the power supply wires 26 and 27. This circuit only lasts for the duration of the surge, normally some microseconds up to few milliseconds.
  • the surge protection device 15 can be based on a spark gap technology, or varistor technology (MOV) or any other know suitable device used to limit voltage differences between conductors.
  • MOV varistor technology
  • Embodiments of Figures 6 and 7 are equivalent to Figure 5 describe above but show a conductive layer 21 comprising a first piece 211 arranged in parallel with a second piece 212, each piece 211 and 212 is arranged at one side of the leading edge 3.
  • a blade 1 for a wind turbine is manufactured in two pieces.
  • the blade comprises an upper shell and a lower shell that are built independently in a vacuum infusion process and after that they are assembled to obtain the blade 1.
  • the first piece 211 is arranged on the upper shell of the blade 1 and the second piece 212 is arranged on the lower shell of the blade 1.
  • Embodiments of Figures 6 and 7 further show a first connection terminal 24 comprising a first part 243 arranged at one side of the leading edge 3 and partially contacting the first piece 211 of the conductive layer 21, and a second part 244 arranged at the other side of the leading edge 3 and partially contacting the second piece 212 of the conductive layer 21.
  • the first part 243 of the first connection terminal 24 is electrically connected with the lightning down conductor 12 through a first conductor 281 and the second part 244 of the first connection terminal 24 is electrically connected with the lightning down conductor 12 through a second conductor 282.
  • Each part 243 and 244 have the rear section 241 connected to the conductive layer 21 and the front section 242 that longitudinally extends towards the blade tip 4.
  • the first conductor 281 and the second conductor 282 are electrically connected with the first power supply wire 26, and the lightning down conductor 12 is electrically connected with the first power supply wire 26 through the surge protection device 15.
  • the first conductor 281 and the second conductor 282 may be an extension of the power supply wire 26.
  • Having a conductive layer 21 with two pieces 211 and 212 may vary the lightning striking onto the connection terminal 24, and thus the first conductor 281 and second conductor 282 allows a balanced current injection on the lightning down conductor 12 avoiding electrical arcs.
  • Embodiment of Figure 6 shows a first connection terminal 24 which is a single piece terminal having the first part 243 and the second part 244 while embodiment of Figure 7 shows a first connection terminal 24 which is a two pieces terminal having the first part 243 and the second part 244.
  • This latter solution simplifies the manufacturing of a blade 1 manufactured in two parts, commonly the upper shell and the lower shell.
  • the conductive layer 21 is a heating mat comprising biaxial carbon fabrics and is integrated into the shell of the blade 1 or is placed onto the shell (at both sides of the upper and lower shell separated by the leading edge 3).
  • the conductive layer 21 is a composite sheet having carbon biaxial fibers with a density of 100-600 g/m2.
  • the conductive layer 21 may be obtained during manufacturing of the shell and thus being part of the shell, or can be placed onto the surface of the shell after the shell is obtained.
  • the conductive layer 21 is a single heating mat extending along the leading edge 3 of the blade 1 from the blade tip 4 to the blade root 5, and for example occupies approximately 2/3 parts of the leading edge 3.
  • the conductive layer 21 has two or more heating mats extending along the leading edge 3 of the blade 1; in said case, each heating mat has connection terminals at their ends for receiving power supply, but only the first connection terminal 24 of the first heating mat arranged on the blade tip region is required to be oversized according to the invention.
  • the terminals 24 and 25 are placed at the ends 22 and 23 of the conductive layer 21, however they may be placed close to the ends 22 and 23.
  • the first terminal 24 is required to be arranged on the first end 22 as close as possible to the blade tip 4
  • the second terminal 25 is not required to be placed exactly on the second end 23, and may be placed close to said second end 23.
  • connection terminals 24 and 25 have a shape similar to the shape of the conductive layer 21.
  • the connection terminals 24 and 25 and the conductive layer 21 have a rectangular shape.
  • the connection terminals 24 and 25 are flat connection terminals. More preferably, the connection terminals 24 and 25 are flat metallic sheets.
  • Power supply wires 26 and 27 are standard low voltage wires used to transfer a power supply from the blade root 5 to the connection terminals 24 and 25. Instead or wires other flat or mesh metallic conductors may be used.
  • the connector 28 and the first conductor 281 and the second conductor 282 are preferably standard low voltage wires.
  • FIGS. 12 and 13 show a single lightning down conductor 12, however, multiple lightning down conductors may be used, in said case, each lightning down conductor is electrically connected to the conductive layer 21 as describe above.
  • the power supply wires 26 and 27 and lightning down conductor 12 are arranged inside the shell of the blade 1.
  • the wires 26 and 27 and the conductor 12 are arranged onto the inner surface of the shell, or are arranged inside the shell, for example onto a shear web.
  • the terminals 24 and 25 of the conductive layer 21 are placed within the shell or placed onto the outer surface of the shell, thus a conductive element 29 is arranged on the rear section 241 of the first connection terminal 24 to transmit electrical currents from the terminal 24 to the lightning down conductor 12 or to the first power supply wire 26 and the lightning down conductor 12.
  • the second connection terminal 25 has also another conductive element 29 to transmit electrical currents from terminal 25 to the second power supply wire 27 (see Figure 8 ).
  • Said conductive elements are preferably made of copper, brass or aluminum.
  • the front section 242 of the first connection terminal 24 longitudinally extends from the first end 22 of the conductive layer 21 a length "a" between 200-1.500 mm. This length allows the lightning to strike onto the connection terminal 24 far from first end 22 of the conductive layer 21.
  • the rear section 241 of the first connection terminal 24 connecting the conductive layer 21 with the first connection terminal 24 has a length "d" of at least 30 mm. This minimum length "d" where layer 21 overlaps terminal 24 guarantees a proper electrical transmission between the first connection terminal 24 and the conductive layer 21.
  • the first connection terminal 24 has a width "b" equal or greater than the width "c" of the conductive layer 21. Having a width "b" of the first connection terminal 24 greater than the width "c” of the conductive layer 21 allows the first connection terminal 24 to transversely project from the conductive layer 21, thus the conductive element 29 is placed on the rear section 241 of the first connection terminal 24 for electrically connecting the first end 22 of conductive layer 21 with the lightning down conductor 12 or the first power supply wire 26, through the conductor 28.
  • the relationship b/c>1 also allows a better performance of connection terminal 24 to attach lightning strikes.
  • the width "b" of the first connection terminal 24 can be reduced by enlarging the length "a" of the front section 242 of the first connection terminal 24.
  • the length "a” and “d” of the first connection terminal 24 is parallel to the longitudinal axis of the blade 1 which longitudinally extends from the blade tip 4 to the blade root 5.
  • the length “a” extends towards the blade tip 4 from the first end 22 of the conductive layer 21 to the front end of the connection terminal 24.
  • the length “d” extends towards the blade root 5 from the first end 22 of the conductive layer 21 to the rear end of the connection terminal 24, thus the conductive layer 21 overlaps the rear section 241 of the first connection terminal 24.
  • the width "b" of the first connection terminal 24 and width "c" of the conductive layer 21 are transversal to the longitudinal axis of the blade 1.
  • connection terminal 24 have a thickness between 100 ⁇ m to 1000 um.
  • the first connection terminal 24 is a rectangular metallic sheet with a length "a" of 500mm, a width "b” of 700mm, a length “d” of 50 mm, and a thickness of 0,15mm.
  • the conductive layer 21 is a rectangular heating mat of a width "c" of 600mm and a thickness of 0,3 mm.

Claims (13)

  1. Rotorblatt für eine Windturbine, Folgendes umfassend:
    eine Hinterkante (2) und eine Vorderkante (3), die sich in Längsrichtung von der Rotorblattspitze (4) zum Rotorblattfuß (5) erstrecken,
    ein Blitzschutzsystem (10) mit mindestens einem an der Rotorblattspitze (4) angeordneten Blitzrezeptor (11) zur Aufnahme von Blitzen und mindestens einem Blitzableiter (12) zur Ableitung eines vom Blitzrezeptor (11) aufgenommenen Blitzstroms zum Rotorblattfuß (5), und
    ein Eisbildungs-Verhinderungssystem (20) mit einer leitfähigen Schicht (21), die entlang der Vorderkante (3) angeordnet ist und ein erstes Ende (22) hat, das zur Rotorblattspitze (4) gerichtet ist, und ein zweites Ende (23), das zum Rotorblattfuß (5) gerichtet ist, und
    eine erste Anschlussklemme (24), die an dem ersten Ende (22) der leitenden Schicht (21) angeordnet ist, und eine zweite Anschlussklemme (25), die an dem zweiten Ende (23) der leitenden Schicht (21) angeordnet ist, um die leitende Schicht (21) mit einer Stromversorgungseinheit elektrisch zu verbinden,
    wobei die erste Anschlussklemme (24) der leitenden Schicht (21) elektrisch mit dem Blitzableiter (12) verbunden ist,
    dadurch gekennzeichnet, dass die erste Anschlussklemme (24) die leitende Schicht (21) teilweise berührt und einen hinteren Abschnitt (241), der mit der leitenden Schicht (21) verbunden ist, und einen vorderen Abschnitt (242) aufweist, der sich in Längsrichtung zur Rotorblattspitze (4) hin erstreckt.
  2. Rotorblatt nach Anspruch 1, wobei sich der vordere Abschnitt (242) der ersten Anschlussklemme (24) in Längsrichtung vom ersten Ende (22) der leitenden Schicht (21) über eine Länge (a) zwischen 200-1.500 mm erstreckt.
  3. Rotorblatt nach Anspruch 2, wobei der hintere Abschnitt (241) der ersten Anschlussklemme (24), der die leitende Schicht (21) mit der ersten Anschlussklemme (24) verbindet, eine Länge (d) von mindestens 30 mm aufweist.
  4. Rotorblatt nach einem der vorhergehenden Ansprüche, wobei die erste Anschlussklemme (24) eine Breite (b) aufweist, die gleich oder größer ist als die Breite (c) der leitenden Schicht (21).
  5. Rotorblatt nach einem der vorhergehenden Ansprüche, das ferner einen weiteren Blitzrezeptor (14) umfasst, der parallel zur ersten Anschlussklemme (24) an der Hinterkante (2) des Rotorblatts (1) angeordnet ist.
  6. Rotorblatt nach einem der vorhergehenden Ansprüche, wobei die erste Anschlussklemme (24) elektrisch mit dem Blitzableiter (12) verbunden ist und die zweite Anschlussklemme (25) elektrisch mit einer Stromversorgungsleitung (27) verbunden ist, wobei der Blitzableiter (12) und die Stromversorgungsleitung (27) mit der Stromversorgungseinheit verbunden sind.
  7. Rotorblatt nach einem der vorhergehenden Ansprüche 1 bis 5, wobei die erste Anschlussklemme (24) elektrisch mit einer ersten Stromversorgungsleitung (26) und die zweite Anschlussklemme (25) elektrisch mit einer zweiten Stromversorgungsleitung (27) verbunden ist, die Stromversorgungsleitungen (26, 27) mit der Stromversorgungseinheit verbunden sind und die erste Stromversorgungsleitung (26) mit dem Blitzableiter (12) durch ein Überspannungsschutzgerät (15) verbunden ist.
  8. Rotorblatt nach einem der vorhergehenden Ansprüche, wobei die leitende Schicht (21) ein erstes Stück (211) umfasst, das parallel zu einem zweiten Stück (212) angeordnet ist, wobei jedes Stück (211, 212) an einer Seite der Vorderkante (3) angeordnet ist.
  9. Rotorblatt nach Anspruch 8, wobei die erste Anschlussklemme (24) einen ersten Teil (243) umfasst, der an einer Seite der Vorderkante (3) angeordnet ist und teilweise den ersten Teil (211) berührt, und einen zweiten Teil (244), der an der anderen Seite der Vorderkante (3) angeordnet ist und teilweise den zweiten Teil (212) berührt, der erste Teil (243) mit dem Blitzableiter (12) über einen ersten Leiter (281) elektrisch verbunden ist und der zweite Teil (244) mit dem Blitzableiter (12) über einen zweiten Leiter (282) elektrisch verbunden ist.
  10. Rotorblatt nach Anspruch 9, wobei der erste Leiter (281) und der zweite Leiter (282) elektrisch mit der ersten Stromversorgungsleitung (26) verbunden sind und der Blitzableiter (12) elektrisch mit der ersten Stromversorgungsleitung (26) durch das Überspannungsschutzgerät (15) verbunden ist.
  11. Rotorblatt nach Anspruch 9 oder 10, wobei die erste Anschlussklemme (24) eine einteilige Klemme mit dem ersten Teil (243) und dem zweiten Teil (244) ist.
  12. Rotorblatt nach Anspruch 9 oder 10, wobei die erste Anschlussklemme (24) eine zweiteilige Klemme mit dem ersten Teil (243) und dem zweiten Teil (244) ist.
  13. Rotorblatt nach einem der vorhergehenden Ansprüche, das ferner ein leitendes Element (29) umfasst, das am hinteren Abschnitt (241) der ersten Anschlussklemme (24) angeordnet ist, um elektrische Ströme von der ersten Anschlussklemme (24) an den Blitzableiter (12) zu übertragen.
EP21382087.1A 2021-02-02 2021-02-02 Rotorblatt für eine windturbine Active EP4036402B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES21382087T ES2967537T3 (es) 2021-02-02 2021-02-02 Pala para una turbina eólica
EP21382087.1A EP4036402B1 (de) 2021-02-02 2021-02-02 Rotorblatt für eine windturbine
PT213820871T PT4036402T (pt) 2021-02-02 2021-02-02 Pá para uma turbina eólica
DK21382087.1T DK4036402T3 (da) 2021-02-02 2021-02-02 Vinge til en vindmølle
FIEP21382087.1T FI4036402T3 (fi) 2021-02-02 2021-02-02 Tuuliturbiinin siipi
US17/586,400 US11773828B2 (en) 2021-02-02 2022-01-27 Wind turbine blade having an ice formation system and a lightning protection system
CA3147027A CA3147027A1 (en) 2021-02-02 2022-01-28 Blade for a wind turbine
CN202210107430.8A CN114837879A (zh) 2021-02-02 2022-01-28 用于风力涡轮机的叶片

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21382087.1A EP4036402B1 (de) 2021-02-02 2021-02-02 Rotorblatt für eine windturbine

Publications (2)

Publication Number Publication Date
EP4036402A1 EP4036402A1 (de) 2022-08-03
EP4036402B1 true EP4036402B1 (de) 2023-11-01

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Application Number Title Priority Date Filing Date
EP21382087.1A Active EP4036402B1 (de) 2021-02-02 2021-02-02 Rotorblatt für eine windturbine

Country Status (8)

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US (1) US11773828B2 (de)
EP (1) EP4036402B1 (de)
CN (1) CN114837879A (de)
CA (1) CA3147027A1 (de)
DK (1) DK4036402T3 (de)
ES (1) ES2967537T3 (de)
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US11773828B2 (en) 2023-10-03
PT4036402T (pt) 2024-01-03
US20220243704A1 (en) 2022-08-04
DK4036402T3 (da) 2023-11-27
ES2967537T3 (es) 2024-04-30
CA3147027A1 (en) 2022-08-02
CN114837879A (zh) 2022-08-02
EP4036402A1 (de) 2022-08-03

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